DR Power Tow-Behind 9.00 Commercial (May 2006 - July 2010) - Manual (Page 47)

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Figure 46
Removing and Replacing the Chipper Blade
•
BEFORE PERFORMING ANY MAINTENANCE, SHUT OFF THE ENGINE, ALLOW FIVE (5) MINUTES
FOR PARTS TO COOL AND DISCONNECT THE SPARK PLUG WIRE.
•
DO NOT ATTEMPT TO RE-SHARPEN THE CHIPPER BLADE. THIS WILL UNBALANCE THE IMPELLER
AND MAY DAMAGE THE ENGINE AND BLOWER. ALWAYS REPLACE A DULL OR DAMAGED CHIPPER
BLADE WITH A NEW BLADE.
•
INSPECT THE ELBOW FOR WEAR IF THE IMPELLER IS WORN.
Tools Needed:
•
(2) 1/2" Wrench or Socket
•
9/16" Wrench or Socket
•
3/16" Allen Wrench
1. Disconnect the Blower Exit Elbow Assembly from the
Collector Box Hose (Figure 45).
2. Remove the Wing Nuts and Wing Screws to disconnect
the Inlet Hose Adapter and Blower Exit Elbow
Assembly from the Chipper/Blower unit (Figure 46).
3. Using two (2) 1/2" Wrenches or Sockets, remove the
twelve (12) Bolts and Nuts (Figure 46) retaining the
Blower Cover Plate and remove the Plate from the
Blower Housing. The Chipper Impeller is now exposed.
4. Using a 9/16" Wrench or Socket, remove the Chipper
Impeller retaining Bolt from the engine shaft and slide
the Impeller off the shaft (Figure 47). Be sure to save
the Key in the slotted shaft.
5. The Chipper Blade is attached to the Impeller with three
(3) Allen head screws and three (3) Nylon Lock Nuts
(Figure 47). Using a 3/16" Allen Wrench and 1/2"
Wrench, remove the old Chipper Blade by removing
the three (3) Screws and Nuts.
NOTE: Carefully observe the orientation of the Chipper
Blade edge and mounting holes when removing
the Blade.
6. Install the new Chipper Blade and Impeller in the
reverse order making sure to install the Key in the
engine shaft keyway.
Figure 46
Nylon Nut
Chipper Blade Allen Head Screw
Chipper
Impeller
Bolt
Blower Exit Elbow Assy
Wing Screw
4-places
Inlet
Hose
Adapter
Bolt and
Nut
12-places
Blower Cover
Plate
Wing Nut
4-places
Back Front
Figure 47